Thin-place-detecting mechanism for looms.



No. 887,446. PATENTED MAY 12, 1908.

G. H. WARREN.

THIN PLACE DETECTING MECHANISM FOR. LOOMS-.

APPLIOATION IILED SEPT. 7. 1907.

CHARLES H. WA RREN, OI" AlliAN'lA, lllOl-ltilA ASRIGNOH lt ,llliAllCli COMPANY. Ol"

HOPEDA LE. MASSAtllLISETTS. A (ORPOHA'IJON ()l MAINE.

THIN-PLACE-DETECTING MECHANISM FOR LOOMS.

Application filed September 7. 1907.

T all whom it may concern.-

Be it known that I, Cit-unites ll. 'AnnnN, a citizen of the United. States, and a resident of Atlanta, in the county ol Fulton and State of Georgia, (whose post-othce address is Atlanta, Georgia,) have invented an Improvement in Thin-Place-Detecting Mechanism for Looms, of which the following description, in connection with the accompanying draw ing, is a speci'licatiomlike letters on the drawing representing like parts.

This invention relates to mechanism for detecting the occurrence of a thin place or streak in the cloth being woven on a loom and to effect a change in the operation 01' the loom u on such detection. In such mechanism t. 1e detector or member has a depending end or linger which normally rests upon the cloth a short distance in front of the tell, and such finger drops through the cloth when the thin place is reached. Sometimes this detecting action takes place when the lay is moving forward, and the front of the lay will strike the finger and bend it or otherwise inj ure the detecting mechanism.

My present invention has for its object the production of simple and ellicient means to obviate injury to the thin-place detector by engagement with the lay.

The novel features of the invention will be fully set forth in the subjoined specilication and particularly pointed out in the following claims.

The drawing represents a transverse sectional view of a sull'icient portion of a loom having thin-place detecting mechanism, with one embodime t of my invention applied thereto.

The lay 1, breast-beam 2, temple 3, its stand l, and the take-up or saint-roll 5 may be and are all of well-known or usual construction.

A stand 6 secured to the breast-beam is extended rearwardly and provided with a transverse bearing 7 for a horizontal rockshaft 8, the outer end ol which is provided with a crank-arm 9, see dotted lines, which cooperates with a dog or pawl 10 pivotally connected at 11 with a shipper-releasing lever 12.

Normally the dog is held in the position shown, but upon detection of a thin place in the cloth the rock-shalt 8 will be turned to lower the dog 10 into position to be engaged Specification of Letters Patent.

l t l I I l I I l l t l l l Patented May 12, 1908. Serial No. 391,766.

by a vibrator l3, and thereby the operation ol the loom will be changed, such for instance as its stoppage by release ol' the shipper by or through the lever 12.

The inner end ol the rock-shalt S is provided with an elongated, rearwardly extended arm 1-lprovided at its l'ree end with a downturned portion or linger l5, constituting a thin-place detector and normally resting upon the cloth in l'ront of the l'cll.

' hen a thin place occurs the detector drops, the linger l opassing through the cloth, as shown in dotted lines, and in the path of the trout ol the lay should the latter be back ol' the linger when detection occurs. Obviously, in such case the l'ront ol' the lay on its lorward beat will engage the depending end ol the linger and will bend or break it, or otherwise damage the detecting mechaliisln. To prevent such injury l. provide the lay with means to engag I and tilt the linger so that its tip will pass across the raceway ol' the lay, and herein such means consists ot a cam 16, lormed by bending a strip 1? ol metal, the strip being attached at 18 to the front of the lay.

'lhe cam su'rlace 16 is inclined upward and rearwards and as the lay comes lorward the tip of the detector linger will slide or ride up along the cam to the level of the raceway and across the same, absolutely preventing any injury to any of the parts ol' the mechanism, as will be manil'est.

l have shown a convenient lorm olthinplace detecting mechanism, but my invention is not restricted to such particular mcchanisn'i, l'or it is applicable to any form wl'icrein detecting action of the detector renders it liable to be engaged by the lay on its l'orward stroke.

Having described my invention, what I claim as new and desire to secure by Letters Patent is 1. ln thin-place detecting mechanismlor looms, in COlllblllttllUll, a detector to normally rest upon the cloth adjacent the fell, a lay, and means thereon independent ol the cloth to lil't the detector l'rom the path of the lay when the detector descends through the cloth into such path.

2. In thin-place detecting mechanism lot i looms, in combination, a detector to normally rest upon the cloth adjacent the tell,

a lay, and means on the [rent ol the lay to 15 rearwardly extended detector having a dethe path of the lay when the detector has decloth in front of the fell, a lay, and a metallic member secured to the front thereof and provided with an upwardly and rearwardly inclined cam portion opposite the detector 20 l finger, to cooperate with the tip of the latter l when passed through the cloth and lii't said finger out of the path of the lay on its forward stroke.

engage the tip of and lift the detector from tecteda thin place in the cloth.

3. In thin-place detecting mechanism for looms, in combination, a detector to nor mally rest upon the cloth adjacent the fell, a lay, and a cam mounted thereon and inclined upward and rearwards and adapted to engage the tip of the detector and lift the In testimony whereof, I have signed my 25 same to the raceway of the layon its forward name to this specification, in the presence of stlroke when said detector has detectedatl'iin two subscribing witnesses.

ace in the cloth. T 1 4. In thin-place detecting mechanism for CHARLES WVARREB' looms, in combination, a pivotally mounted, Witnesses:

A. A. MEYER,

pending iinger to rest normally upon the ROB'1.LEE AVARY. 

